Roofing Membranes with Reactive Edge Adhesives

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Solution Overview

Problem

Conventional roofing membranes require complex installation processes involving edge preparation and adhesive application, which can lead to human error, improper bonding, and increased installation time, especially when overlapping adjacent edges for bonding.

Innovation Solution

The use of roofing membranes with pre-applied adhesive materials or tapes on opposing edges that chemically react upon contact to simplify the installation process, eliminating the need for edge preparation and primer application, and incorporating mechanical fastening components for secure attachment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional roofing membranes are installed using edge preparation and adhesive application, then bonding strength can be achieved, but installation time increases and human error risk increases

Engineering Contradiction:
Improvebonding strengthVSAvoidinstallation time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The adhesive material is pre-applied to the edges of the roofing membrane during manufacturing, eliminating the need for on-site edge preparation and adhesive application. This preliminary action ensures consistent adhesive placement and eliminates variability in manual application, while significantly reducing installation time.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The roofing membrane is designed to be self-adhering through the integrated adhesive material on its edges. The membrane automatically bonds to adjacent membranes or substrates through pressure-sensitive adhesion or chemical reaction, eliminating the need for separate adhesive application steps and reducing reliance on installer skill.

Inventive Principle:
Principle #25Self-service

2Reliability

If conventional roofing membranes require edge preparation and primer application, then bonding reliability improves, but device complexity increases

Engineering Contradiction:
Improvebonding reliabilityVSAvoidinstallation process complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The adhesive material and the roofing membrane are combined into a single integrated product. The adhesive is permanently bonded to the membrane edges during manufacturing, merging the membrane and adhesive into one component that requires only simple placement and pressure for activation, eliminating multiple separate installation steps.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The complex edge preparation and primer application steps are extracted from the installation process. The adhesive material is pre-prepared and protected during manufacturing, removing the need for on-site preparation activities and simplifying the installation to basic placement and bonding operations.

Inventive Principle:
Principle #2Taking out (Extraction)

3Productivity

If pre-applied adhesive materials are used on roofing membranes, then installation time decreases, but manufacturing complexity increases

Engineering Contradiction:
Improveinstallation speedVSAvoidmanufacturing complexity
Core Design Contradiction:
ProductivityVSEase of manufacture

Solution Approach 1:

The adhesive material is applied to the membrane edges during the manufacturing process, performing the bonding preparation in advance. This allows the adhesive to be uniformly applied under controlled factory conditions, ensuring consistent quality while enabling rapid on-site installation.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The adhesive material undergoes parameter changes during manufacturing, such as being applied in a liquid or tacky state and then cured or stabilized for storage. This allows the adhesive to maintain its bonding capability during storage and transport while being ready for immediate activation during installation through pressure or chemical reaction with the substrate.

Inventive Principle:
Principle #35Parameter changes

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This approach reduces installation time, minimizes human error, ensures a strong and watertight bond, and simplifies the installation process by allowing adjacent membranes to be easily coupled without the need for on-site edge preparation, while also providing a secure mechanical fastening system.

Implementation Method 1

At least one of the first material or the second material comprises a first reactive material of a chemically reactive two-part cure system that is configured to chemically react upon contact of the first reactive material with a second reactive material of the chemically reactive two-part cure system

Methodology Applied
Scientific EffectChemical reaction: Chemical Bonding

Data Source

PatentUS10041255B2Roofing membranes having multiple adhesive regions and method therefor
Publication Date: 2018.08.07 JOHNS MANVILLE CORP
  • US10041255B2 patent drawing
  • US10041255B2 patent drawing
  • US10041255B2 patent drawing

AI summary

A roofing membrane may include a main body, a first material, and a second material. The first material may be bonded to the main body and positioned toward a first edge thereof. The second material may be bonded to the main body and positioned toward a second edge thereof. The second edge may be positioned opposite the first edge such that the first and second materials are positioned toward opposite edges of the main body. At least one of the first material or the second material may include a first reactive material of a chemically reactive two-part cure system that is configured to chemically react upon contact of the first reactive material with a second reactive material of the chemically reactive two-part cure system.